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You must complete the pre-assessment prior to beginning the lesson. [$ else $]

Look at how you can change the pressure inside a soda bottle

If you wet the opening of a soda bottle, place a coin on top of the opening, put the bottle in the freezer for about an hour, then remove it and place your hands around the bottle for a few minutes, you'll notice that the coin will pop out.

Click on the "Play" button to the right to see this happen.

Why does this happen?

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